Pen



FIG. 1 is a front right perspective view of a pen showing my new design;

FIG. 2 is a rear right perspective view of the pen shown in FIG. 1 with the cap removed and placed on the opposite end of the pen;

FIG. 3 is a rear right perspective view of the pen shown in FIG. 1;

FIG. 4 is a right side view of the pen as shown in FIG. 2;

FIG. 5 is a front elevation view of the pen as shown in FIG. 1;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a right side view thereof;

FIG. 9 is a rear elevation view thereof; and,

FIG. 10 is a left side view thereof. 

The ornamental design for a pen, as shown and described. 